Answers

Subtract 42/32 from 21/75

1^st number: 21/75, 2^nd number: 1 10/32

21/75 - 42/32 is -413/400.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 32 is 2400
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2400
2. For the 1st fraction, since 75 × 32 = 2400,
   21/75 = 21 × 32/75 × 32 = 672/2400
3. Likewise, for the 2nd fraction, since 32 × 75 = 2400,
   42/32 = 42 × 75/32 × 75 = 3150/2400
4. Subtract the two like fractions:
   672/2400 - 3150/2400 = 672 - 3150/2400 = -2478/2400
5. After reducing the fraction, the answer is -413/400

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁴²/₇₅-⁴²/₃₂ ²¹/₇₅-⁸⁴/₃₂ ²¹/₇₅-⁴²/₆₄ ⁶³/₇₅-⁴²/₃₂ ²¹/₇₅-⁴²/₉₆

Subtract Fractions Calculator